2008 Prowler H1 650 - No Spark

2454 Views 6 Replies 1 Participant Last post by ImaDoitMeow, Mar 25, 2022

ImaDoitMeow

Discussion Starter · Mar 14, 2022

Thanks for having me. I’m going to try and make this a good thread someone can use for troubleshooting reference in the future. Complete with an actually conclusion (like so many threads are missing).

I just picked up a 2008 prowler. Very nice machine. Great shape with about 290 hours and 1900 miles. Bought it non running. Took it on as a project. I’m cheap. So, I usually buy broken then fix.

It’s not running because it doesn’t have spark. I was hoping for something simple, but, I don’t think I’m going to get that lucky. Initial signs are pointing towards flywheel magnets or stator or CDI. All of these are expensive and suck. But, prior to tearing into the motor, I want to be damn sure.

I downloaded the service manual and will spend a little more time reviewing later. But, I do better figuring stuff out and using the manual for reference. Struggling to find a wiring diagram as well. But, was hoping there might be someone here that can help.

Key works and motor cranks. Just no spark. I put a test light on the white/blue wire going to the ignition coil and it’s not lighting while cranking. So, not getting signal to fire. Ground is good. I have continuity from the CDI harness plug to the coil. So, the pathway exists. The CDI is getting power.

I’m trying to figure out how to test pulse from the stator/flywheel. Can I hook a test light upto ground and probe a harness while cranking to verify the flywheel magnets are good?

It’s not a fuse. They are good. I haven’t checked diodes yet. Not sure how. And not sure what they are for exactly.

Thanks in advance.

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ImaDoitMeow

Discussion Starter · #2 · Mar 14, 2022

Okay, I lied. It’s a 2006. But, I dig into the manual and performed the following tests. I didn’t have a peak voltage adapter. But, I set my meter to DC voltage and gave it a shot. See below for results.

Ignition Coil
Primary - 0.9
Secondary - 10530
Secondary a little out of tolerance. Manual says 5200 to 7800 Ohms

Primary/CDI
Voltage Dc with Red on Primary Black to ground
Key on -380. Not stable. Dropping.
Cranking -375. More stable.
The readings with the key on seem off.

Resistance Charging Coil
0.5 between all 3
Good

Resistance Trigger Coil
Between green and blue wire. 186
Good

Resistance Source Coil
Between yellow and white 0.5
Good

Magneto Coil Trigger Voltage Peak
3.4MV
Not good. But I’m not sure if I’m getting right readings with my meter.

Magneto Coil Source Peak Voltage Source
5MV
Not good. But I’m not sure if I’m getting right readings with my meter.

Any thoughts?

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ImaDoitMeow

Discussion Starter · #3 · Mar 15, 2022

I just found my Fluke meter and tested each diode. They are working fine and installed in the right direction.

This meter had a max voltage reading setting. I just retested the following and these are results. Still low.

Magneto Coil Trigger Voltage Peak
73.9mvdc (0.0739dcv)

Magneto Coil Source Peak Voltage Source
7.5mvdc (0.0075dcv)

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ImaDoitMeow

Discussion Starter · #4 · Mar 18, 2022

I checked the wiring. Don’t see any damage where it comes through the cover. Would have to take the black cover off to really look better. I think I have a failure in the trigger coil. Testing says I do at least. I purchased a peak voltage adapter to be sure. See below:

Magneto Coil Trigger Voltage Peak
0.728vdc

Magneto Coil Source Peak Voltage Source
0.342vdc

Also, the readings on the primary wire to the ignition coil are weird. It says I’m supposed to have 132-198 with they key on. I’m showing 365. Then when cranking, I’m showing pretty much the same (which is in spec of 300-400vdc). I guess that would mean bad CDI? Maybe it’s okay? It’s out of spec. Not really sure.

I pulled the spark plug cap off and repeated my ignition coil test. It passed fine. So, it’a down to the above.

I’ll be sourcing my parts and tearing off the cover. Trying to decide if I’m going togo ahead and do the magneto when l’m in there. I found a source for just the trigger coil for like $35. I’ll make decision in the morning.

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ImaDoitMeow

Discussion Starter · #5 · Mar 18, 2022

Super active site.

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ImaDoitMeow

Discussion Starter · #6 · Mar 19, 2022

I think I have a failure in the trigger coil. Testing says I do at least. I purchased a peak voltage adapter to be sure. See below:

Magneto Coil Trigger Voltage Peak
0.728vdc

Magneto Coil Source Peak Voltage Source
0.342vdc

Also, the readings on the primary wire to the ignition coil are weird. It says I’m supposed to have 132-198 with they key on. I’m showing 365. Then when cranking, I’m showing pretty much the same (which is in spec of 300-400vdc). I guess that would mean bad CDI? Maybe it’s okay? It’s out of spec. Not really sure.

I pulled the spark plug cap off and repeated my ignition coil test. It passed fine. So, it’a down to the above.

I’ll be sourcing my parts and tearing off the cover. Trying to decide if I’m going togo ahead and do the magneto when l’m in there. I found a source for just the trigger coil for like $35. I’ll make decision in the morning.

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ImaDoitMeow

Discussion Starter · #7 · Mar 25, 2022

It was the pulsar/trigger coil. Fired right up when back together. Unfortunately, I’m having driveline issues. Pretty sure I’m going to have to split the case. Grinding sounds terrible.

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